OK. You can add upgrades to the assembly machine by right clicking them. The assembly machine seems to work fine with a couple overclockers.
However, as soon as you add any overclockers you will no longer be able to do the olivine/emerald/olivine dust + advanced circuit to make data storage units. It will consume the items, but it will glitch the machine and you will have to pull it up before you can do anything else with it.
Now, seeing how it takes 160 seconds to do this, i would suggest when you get to the point where u need these to just make a few assembly machines until this bug is fixed.
I have not tested this with any of the other machine upgrades yet, and would not be surprised if they broke this recipe as well, or if any other recipes did not work with upgrades either.